[cups] Determine the correct IPP URI

Michael Sweet msweet at apple.com
Tue Jul 21 05:53:33 PDT 2015


Jorge,

Most (network) printers support AppSocket (socket://...) as that is the most basic "protocol" that can be supported (raw TCP socket).


> On Jul 20, 2015, at 9:00 PM, Jorge Fábregas <jorge.fabregas at gmail.com> wrote:
> 
> On 07/20/2015 08:37 AM, Michael Sweet wrote:
>> The snmp backend can be used to probe a printer for the correct URI to use.  Try:
>> 
>>    /usr/lib/cups/backend/snmp ip-addres
> 
> Hi Michael,
> 
> This is exactly the sort of thing I was looking for.  Thanks!
> 
> I tried it now with the mentioned printer but it returned "socket"
> regardless.  Ok, then I went to another machine (that had like 14
> printers configured via IPP).  I just did "grep ipp
> /etc/cups/printers.conf" and scanned all of those.  To my surprise they
> all returned "socket://" as well (no mention of IPP).   Have you seen
> this kind of beavior before?  I guess I must fire up snmpwalk :)
> 
>> Newer printers will use "/ipp/print" as the path.
> 
> I'm glad to know that there's some standardization in that part.
> 
> Thanks!
> Jorge
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair




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